Motor sawing-machine.



G. M. /STARNBS- MOTOR SAWING MACHINE.

APPLICATION FILED MAY l1, 1911. 1,1 32,402. Patented Man-16, 1915.

6 SHEETS-SHEET 1.

G. M. STARNES..

MOTOR SAWING MAGHINL APPLICATION FILED MAY 11,1911.

Patented Mar. 16, 1915.

6 SHEETS-SHEET 2.

Alibi/my G. M. STARNES.

MOTOR SAWING MACHINE.

APPLICATION FILED MAY 1l, 1911.

1l?2,4=02;I Patented Mar.16,1915. 4

6 SHEETS-SHEET 3.

Illmmczuz Affomy G. M. STARNES.

MOTOB. SAWING MACHINE.

APPLICATION FILED Mun, 1911.

Patented Mar. 16, ,1915.

WHW 5 W G. M. STARNES.

MOTOR SAWING MACHINE.

APPLICATION IILBD MAY 11, 1911.

Patented Mar. 16, 1915.

6 SHEETS-SHEET 5.

mum

INVENTOR @ea/"fe /mes e www a liomey G. M. STARNES. MOTOR SAWINGMACHINE.v

APPLICATION FILED MAYll, 1911.

Patented Mar. 16, 1915.

Affomey Gaone-n M. sTAnNns, or Lrrrnn Boex, ARKANSAS. l Moronsnwinmcnmn.

Specication of Letters Patent.

Application led May 11,- 1911. Serial No. 626,569. l

To all 'whom t may concern Be it known that I, GEORGE M. STAnNns, acitizen of the United States, residing at Little Rock, in the county ofPulaski and State vof Arkansas, have invented certain new and usefulImprovements in Motor Sawing-Machines, of which the followlng 1sAprovision of a device of this character which is light and compact 1nconstruction so as to be readily transported from place toplace, whichcan be readily adjusted to accommodate various sizes ofv logs or otherobjects which it may be desired to operate upon, and which can bereadily set up in operative position and connected to a ortable motor.

A still further object o the invention is the provision of a motordriven sawing mechanism which can be applied to a standing tree eitherso close to lthe ground as to practically eliminate the stump or at anydesired height upon the same, which can be quickly adjusted to vary thestroke of the saw blade, and which comprises few and durable parts welladapted to withstand.

the wear and tear to which such devices must necessarily be subjectedwhen in use.

With these and other objects in view, the invention consists in certainnovelcombinations and arrangements of the parts as will more fullyappear as the description proceeds, the novel features thereofbeingpointed out in the appended claims.

For a full understanding of the lnvention, reference is to be had to thefollowing description and accompanying drawings, in'

which l .n Figure 1 is a side elevation of the sawing mechanism, the sawblade being shown in full lines at the upper limit of its movement andin dotted lines at the lower limit of its movement. Fig. 2 is a top planview of the same. Fig. `3 .is a Side elevation with the main frame andportions of the jointed connecting levers removed, the saw belng shownat the lower limit of its movement. Fig. 4

is a transverse sectional view through the de? vice. Fig. 5 is anenlarged side elevation of one of the saw guides, portions being brokenaway.` Fig. 6 is a vertical sectional View on the line 6 6 of Fig. 5.Fig. 7 is an enlarged detail view of the main gear wheel and the strokevarying mechanism, portions being shown in section. Fig. 8 is an en-Patented Mar. 16, 1915. l'

larged transverse vertical sectional view through the main gear wheeland stroke varying mechanism. Fig., 9 is an enlarged sectional viewthrough the eccentric member of the stroke4 varying mechanism on thelline 9 9 of Fig. 8, and Fig. 10 is an enlarged view of one of the guidemembers for the main frame, portions being broken away and shown insection, the line of section being line 10-10 of Fig. 3. Fig. 11 is adiagrammatic elevation partly in section, illustrating the frameconstruction and the driving mechanism of the invention embodied in amodification employing an endless chain-saw,.instead of the'reciprocating saw blade shown in the other figures. Fig. 12 of thedrawings is a top plan view of the structural features shown in Fig. 11.

vCorresponding andf'like parts are referred,l

to in'the following description and indicated in all the views of'thedrawings by the same reference characters.

Specifically describing` the present embodiment of the invention, theletters A designate a pair of spaced vand substantially parallel guidestandards which are designed to receive the log or; other member to beoperated upon between them, each of the said guide'stan'dards beingformed of 'a series of rodsl 1 which are suitably connected at theirends by the plates 2. Similar slides 3 are mounted upon the guidestandards A and suitable clamps 4 are provided for lockingl the saidslides in an adjusted position. Each of the slides 3 is formed with asleeve 5 adapted to receivev a transverse rod 6 which connects the guidestandards. It will be readily obvious that this construction( admits ofthe vguide standards being moved toward or away from each other as maybe required to accommodate a log or tree trunk of Vgreater or lessdiameter. A main frame 7 is mounted upon the lmiddle portion of the rod6 and normally projects outwardly away from the plane of the standardsA.

The opposite ends of the' main frame 7 are .provided with downwardlyextending .rests 8 adapted to fit against the top or one side of themember being sawed. These rests 8 are preferably provided with teeth 9adapted to bite into and grip the log. A pair of ab hooks 10 are mountedupon the outer end of the main frame 7 and are adapted to extend aroundthe sides of the logand to grip the bottom or opposite side thereof, thesaid grab hooks being connected by toggle levers 11 to a controllinglever 12, and a suitable pawl and rack mechanism 13 being provided forlocking the said levers in an adjusted position. The bottom of the logis also designed to be engaged by a pair of dogs 14 carried by slides 15mounted upon the innermost guide rods 1 of the standards A. These slides15 are connected to upwardly extending rods 16 provided with racks 17adapted to engage the teeth 18 of levers 19, the said levers beingmounted upon the upper ends of the standards A and being provided withthe usual pawls 20 adapted to engage segmental racks 21 to lock thelevers in position. Means are also provided whereby the racks 17 may bedisengaged from the teeth 18 for the purpose of drawing the dogs 14 intoan initial engagement with the log, and for this purpose release levers22 are arranged at the upper ends of the standards A, and each of whichlevers has an operative connection as at 22a with ya swinging pivotalcarrier 22" for a double-flanged combined guide and presser roller 23which engages the back of the rack member 17 of the rod 16. When theserelease levers are moved in one direction, with the levers 19 in anyposition, the rollers 23 are drawn adjacent to the racks 17 to bring andhold them in engagement with the teeth 18 of the levers' 19, while whenthe release levers 22 are moved in an opposite direction the rollers 23are eased from the'rods 16 to admit of the racks 17 springing out ofengagement from the teeth 18. After thev latter operation the dogs 14can be manually slid along and drawn into an initial engageyment withthe log. Then when the racks 17 have again been thrown into engagementwith the teeth 18 inthe manner explained, the levers 19 can be utilizedfor causing the dogs to forcibly engage the log and b1te into the same.It will thus be apparent that by suitably manipulating the levers 19 and22 the device may be caused to grip or release a log or other similarobject, as may be required.

A drive shaft 25 is journaled within surtable bearings upon one side orthe ,mam :trame 7 and is provided at its inner end with a pinion 26 andat its outer end with a gear wheel 27 adapted to receive power from anysuitable source such as a portable motor 28. The pinion 26 meshes with amain gear wheel 29 which is also Vmounted upon the frame'7 and carries awrist p1n 30. A cross head 31 is slidably mounted upon the transverserod 6l and carries from a rigid insegne connection 31n a longitudinallygrooved shifting yoke member 32 which receives an reciprocating `rackbar 35, the said rack bar' being suitably mounted within guide brackets36 upon the slides 3. Rollers 37 engage the back of the rack bar whilethe toothed edge of the said rack bar meshes with pinions 38 carried bythe slides 3. rllhese pinions are rigid with the shafts 39 which havethe gear wheels 40 applied thereto and also have the inner ends ofswinging levers 41 mounted thereon. The outer ends of the levers 41 arepivotally connected to swinging levers 42 by means of a shaft 43 havinggear wheels 44 rigid therewith. The opposite ends of the second levers42 are connected to slides 45 mounted upon the outermost rods 1 of thestandards A. lt will thus be apparent that the jointed levers 41 and 42can be moved toward each other or spread apart'to admit of the slides 45being moved up and down up'on the guide standards A.

Transverse shafts 46 extend through the slides 45l and are provided atone end thereof with gear wheels 47, the various gear wheels 40,44 and47 of each of the jointed levers being connected by the chains or belts48 and suitable belt tighteners 49 being provided for taking up Aanyslack in the chains or belts. The opposite end ont each of the shafts 46is provided with a flanged gear wheel 50 meshing with teeth 51 upon theback of a saw blade 52. rlhis saw blade is mounted t'o reciprocate backand forth through the guide members 53 which are carried by the slides45, and the said saw blade is formed with a longitudinallyextendingseries of o enings 54 receiving teeth 55 upon guide roll) ers56 engaging one side of the saw blade and journa ed upon the guides 53,the opposite side of the saw blade being similarly engaged by rollers 57which are grooved at 58 to receive projecting ends of the teeth 55 andare also journaled upon the guides 53. lt will be apparent that theseVteeth 55 projecting transversely through the blade hold-v the teeth 51at the back of the saw blade in engagement with the flanged gear wheels50 so thatwhen motion is 1mparted to 'the said Banged gear wheels 50 thesaw will bemovedlongitudinally.

rlhe invention also contemplates a novel means for varying thefstroke ofthe saw blade wherebythe said saw blade'may even while runningbe causedto take either a long or short stroke asfmay .be necessary or desirable.By referencehto Fig. .8 it will be observed that the wrist pin 30extends insane@ .the outer end thereof, the said rack being designed tobe engaged by a spring retracted pawl 66 arranged within a lever 67pivotally mounted upon the hub 64. The end of the push button pawl 66normally projects through the end of the lever, and when it is desiredto shift the position of the eccentric 62 it is merely necessary to push1nwardly upon the outer end of the spring retracted pawl 66 and causethesaid inner end of the said pawl to engage the rack 65, and to thenmove the lever as required. It will be entirely obvious that by thusturning the eccentric 62 the wrist pin 30 can be moved in and out withinthe slot 59r and that the stroke of the saw will be increased as thewrist pin is moved outwardly and decreased as the wrist pin is movedinwardly that is by arying the distance of the pin fromv the axis ofrotation. For the purpose of locking the eccentric 62 against accidentalmovement the said eccentric is provided with a spring arm 68 adapted toengage notches 69 in the ring 61. The best results arev ordinarilyattained when the saw blade has the larger amplitude of v movement,although it frequently becomes necessary to shorten the stroke in orderto prevent the ends of the saw from vcoming into contact with someobject such as another tree or log. The device is of a portable natureand is designed to be employed upon logs or standing timber as they maybe found in the field or forest. When mounting the device in positionthe standards A are adjusted to the proper distance apart, and theslides 3 moved downwardly until the saw blade rests against the memberto be sawed. The

clamps 4 are then tightened to hold the slides 3 in position and thelever 12 and levers 19 properly manipulated to cause the grab h ooks 10and dogs 14 to grip the log. The portable motor 28 is thenconnected tothe gear wheel 27 and motion thereby imparted to the main wheel 29. Ashas been previously described, this main wheel operates to reciprocatethe rack bar 35 and this rack bar alternatel j turns the pinions 3H inopposite directions.i lFrom these pinlons power is transmitted throughthe gearing upon the levers 41 and 42 to the flanged gear wheels 50which operate directly upon the saw. The saw is thus reciprocated backand forth and the movement of the slides 45 which carry the saw guides53 admits of the saw being` yfed in the necessary manner. When operatingupon a log in a horizontal position, as indicated in Fig. 1 of lthedraw- By way of the'weight of the saw would be suiiiinga feed 1t forward1n the requlred mancient t0 ner, although should the device be' appliedto a standing tree, it would be necessary to feed the blade manually,which could be con'- veniently accomplished by attendants holdingDwithpressure the saw-carrying slides.

articu ar attention is directed to the fact that with the abovedescribed construction the saw is always pulled from the forward endsthereof so that the operation of the saw blade is due to a pulling forceinstead of a pushing force. It will further be obvious that anysuitablelform of portable motor may be employed for driving the saw,although a portable gasolene motor is preferably employed for thisvpurpose.

illustrating the range of modification that may be resorted to incarrying out the invention, without affecting the essential featuresrelating to the various adjustments and the means for communicatingmotion to the saw, there is illustrated in Figs. 11 and 12 of thedrawings a construction and arrangement of parts involving the use ofanother type of saw. In the form of the invention already described areciprocating saw blade is employed that is proendless chain-saw, whichhas a continuous l motion in one direction. Inadapting the machine foroperatlon 1n connection wrth an endless cham-saw only a few minorchanges are required in the equipment and rigging of the machine.Referring more particularly to this adaptation of the machine, it willbeobserved by reference to Figs. 11 and 12 that no change or alternationis required in the general framework of the machine, nor lin the meansfor accomplishing the various adq justments, nor in the means forsuspending the saw through the medium of the swinging jointed levers 41and 42. The only distinctive 'change or modification involved is todispense with the sliding cross head 31, the reciprocating rack bar 35,and the particular guiding means (including rollers 56 and 57) for thereciprocating saw blade. Aside from these details the modifiedconstruction of machine, embodying the chain-saw, includes the guidestandard A, the clamping slides 3,

4,` and the lower saw-suspending slides 45,

lwhich carry the shafts 46 previously referred-to, and upon one end ofwhich shafts are mounted double flanged pinlons 60 and 61 respectively.The pinion 61 is utilized as a guiding idler and has no drivingconnection therewith, while the other pinion 60 is the dri-ve pinionforthe endless chain saw 62, and is driven through the system of chains orbelts, previously described, carried by one set of the jointed levers4:1 and 42, sald system of chains or belts being in turn driven from asprocket wheel or gear 40 carried by a shaft 39 as reviously set forth.However, in the modi 'cation herein described the shaft 39 that is`utilized for driving purposes has mounted thereon a bevel gear wheel 63meshing with a similar gear wheel 64 on a counter driving shaft 65 whichis suitably geared as at 66 with the main Agear wheel 29. rThe counterdriving shaft 65 may be a exible section of shafting, if preferred butit is proposed that the bevel gear wheel or pinion 64 on the said shaftbe splined or feathered thereto so as to have sucient' sliding movementon the shaft to not interfere with adjustments.

However, this is a gearing detail that may be charged or varied to suitconditions without ai'ecting the invention. In a line with and beyondthe guiding idler 61 for the chain saw 62 there is yieldingly supporteda second double flanged toothed tension idler pulley 67 for thechain-saw. rlthe tension idler pulley is preferably slidably supportedupon an Outrigger bracket or arm 68, and is yieldingly held underpressurein .engagement with the rack teeth 69 at the inner edge of thechain-saw. By this` construction the chain saw is kept taut and under aproper working tension, and at the same time admitting of each and allof the various adjustments in the machine hereinbefore more particularlyreferred to. The chain-saw 62 consists of an endless series of chainlinksl of duplicate construction and pivotally jointed as at 70. Eachlink is cut at its outer edge to provide saw teeth 7l, while the inneredge of each link is formed with rack teeth 69 above referred to. Thesaw teeth 71 and the rack teeth are in continuous relation so that asthe driving mechanism is operated the chain saw is continuously drivenin one direction, and the saw teeth carried through the timberbeing'cut.

Having thus described the invention, what I claim as new and desire tosecure by Letters Patent, is v 1. In a sawing machine, a frame workincluding supporting standards, slides mounted upon the standards andhaving clamping means, a 'main frame adjustably supported on i saidslides, other *saw carrying slides mounted upon the standards, 'a sawcarried by said slides, jointed levers connecting the iirst mentionedslides to said other slides,`

and saw driving mechanism carried by the main frame and operativelyconnected with the saw.-

l 2. In a sawing machine, a framework in cluding spaced standards,slides mounted-v upon the standards and having vclamping means, a mainframe adjustably supported the 'main frame for actuatin eating rack bar,a second set o slides mount said slides, means uponthe main frame :for

imparting a reciprocating movement to the bar, a saw, and an operativeconnection between the saw and the reciprocating bar.

4c. In av device oi' the character described, the combination of a .pairof standards adapted to itl upon opposite sides of a member to be sawed,a mainframe arranged between the standards, guide brackets carried bythe standards, pinions journaled upon the guide brackets, areciprocating rack bar operating through the guide brackets and engagingthe pinions, 'means upon the main frame for driving the reciprocatingrack bar, slides mounted upon the standards and formed with saw guides,a saw mounted within the saw guides, jointed levers connecting the guidebrackets to the said slides, and gearing carried by the jointed leversfor transmitting power from the before mentioned pinions to the saw.

5. In a device of the character described, the combination of a pair ofstandards adapted to t upon opposite sides of a member to be sawed,slides mounted upon the standards and formed with guide brackets,pinions journaled upon the guide brackets, a reciprocating rack baroperating through the guide brackets .and rengaging the pinions, a rodconnecting the slides, a main frame mounted upon the rod, means upon themain frame for driving the reciprocating rack bar, a second set ofslides mounted `upon the standards and formed with saw jointed leversfor transmitting power from `the plnlons to the saw blade.

6. In a device of the character described, the combination of a pair ofstandards adapted to t upon opposite sides of a member to be sawed,slides mounted upon the standards, means for locking the slides in anadjusted position, a rod adjustably con necting' the slides to admit ofthe standards being moved toward or away from each other, a main framemounted upon the rod,

pinions carried by the slides, a reciprocating rack bar engaging thepinions, means upon the recipro- Vio ed upon the standards and formedwith saw guides, a saw mounted within theI saw guides, jointed'leversconnecting the first mentioned-slides to the second mentioned slides,and gearing upon the jointed levers for transmitting motion from thepinions to the saw.

7. In a device of the character described,

thev combination of a. pair ofstandjards adapted to fit upon oppositesides of the vmember to be sawed, a transverse rod eX- tending betweenthe standards, a main frame mounted upon the transverse rod, a crosshead slidable upon the transverse rod,means upon the main frame foractuatin the cross head, a reciprocating rack bar aving an operativeconnection with the cross head, gear wheels in enga-gement with oppositeends of the reciprocating rack bar, a saw blade, supporting and guidingmeans for the saw blade, andY means for transmitting motion from thegear wheels to the saw` so 'as to engage the gear wheels and having anoperative connection with the cross head,

L slides mounted upon the standards and previded'with saw guides, a sawvblade mounted within the guides, jointed levers connectin the guidebracketsto the slides to admit o the slides moving freely upon thestandards,

and gearing carried by the jointed levers for transmitting motion lfromthe gear wheels lto the saw blade. l

' 9. In a device of the character described, the combination of a pair'of spaced standards, a transverse rod extending between the standardspamain frame mounted upon the upon the main frame andprovided with atransverse rod, va cross head slidablymountedupon-the rod and formedwith a longitudinally grooved member, a wheel mounted wrist pin receivedwithinv the said grooved member of the cross head, guide brackets towardopposite ends of the transverse rod,

gear wheels mounted upon'the guide brackets, a reciprocating rack barhaving an operative ,connection with the cross head andv mounted uponthe guide `bracket so as to en glage the gear wheels, slides mounted uon t e standards and provided. saw-gu1 es,i

a saw mounted within the saw guides, jointed levers connecting theguidel brackets to the slides, and gearing carried by the'jointed leversfor transmitting motion Vfrom the gear wheels to the saw. o

- 10. In a device of the character described,

` the combination of la pair'of spaced standards, slides mounted uponthe standards, means for locking the slides in an adjusted position,I atransverse rod connectingthe slides, a main frame mounted upon thetransverse rod, a cross head slidably mounted upon the transverse rodand formed with a transversely grooved portion, a wheel mounted upon themain frame and provided with a wrist pin engaging the longitudinallygrooved portion of the cross head, guide `brackets projecting from theslides, gear wheels mounted upon the guide brackets, a reciprocatin rackbar connecting the guide brackets an engaging theY gear wheels, the saidrack bar having an operative connection vwith the'cross head, a secondset of slides mountedupon the standards and providedwith saw guides, asaw mounted within the saw guides, jointed levers connecting the firstmentioned slides to the second mentionedY slides, and gearing. carriedby the' jointed levers for transmitting motion from the gear wheels uponthe guide brackets to the saw. .Y

11. In a device of the character described, f

the combination .of a pair of spaced standards, slides mounted upon thestandards, means for locking the slides in ansadjusted position, atransverse rod connecting the slides, a cross head mounted upon thetrans:

'.verse rod, a main `frame mounted upon vthe ftransverse rod, means uponthe main frame for reciprocating the cross head, gear wheels carriedbythe slides, a reciprocating" rack bar having an operative connectionwith the vcross head and engaging thegear wheels, a second setfofslidesmounted upon thestandards and provided with saw guides, a saw :.bladefmounted within the saw. guides, gear wheels upon the second set ofslidesfor driving the saw blade, jointed levers connecting the rst mentionedslides to the second men.

tioned slides,- and gearing carried byl the jointed levers fortransmitting motion from theV gear wheels of the `first mentioned slidestol the gear wheels of the .second mentioned slides.

In testimony whereof I icreuntc-l aiiix my i ture in the presence o wow1 nesses. s gna l GEORGE M. STARNES.

Witnesses:

, BARNES..

